Twist-equalizer attachment for spinning mules



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ATTORNEY.

Nov. 16 1926.

1,607,588 R. .1. HARRINGTON v l TWIST EQUALIZER ATTACHMENT FOR SPINNING MULES Filed'August 8, 1922 2rSheets-Sheet 2 IN VEN TOR.

E- 1] -HARMNGTDN ATTORNEY.

Patented Nov. 16, 1926.

v UNITED STATES ROBERT HARRINGTON, OF DALTON, MASSACHUSETTS.

TWIST-EQUALIZER ATTACHMENT FOR SPINNING MULES.

Application filed August 8, 1922. Serial No. 580,574.

This invention relates to improvements in attachments for'spinning mules and its leading object is to provide means for regulating the number of turns per inch in the yarn so that the yarn wound on the upper end of any bobbin will have the same number of turns per inch as the yarn on the rest of the bobbin. v

This application involves certain improvements over those disclosed inmy Patent #875,655, issued December 31st, 1907, and embodies means whereby the mechanism covered by this patent may be utilized for itsrown purposes and also to carry out those of the present invention.

lVith the above and other objects in view the'invention consists in certain new and useful combinations,.constructions and arrangements of parts, clearly described in the following specification and fully illustrated in the accompanying drawings,in which z- Fig. 1 is a perspective view showing the combined yarn evener .and twist equalizer.

F ig. l isa detail of certain parts shown in Figl 1.

F ig. 2 is an end elevation of a mule head equippedwith my improvement.

Fig. 3 is a detail view, partly in section, taken on an enlarged scale, showing the roving gear and the plate for varying the arc of moving of this gear. p

. Fig. t is a detail transverse sectional view taken through the associated operating rod.

Fig. 5 is a detail view of a modified plate construction.

In the manufacture of mule spun yarn there is a tendency of the yarn as itis wound upon the upper endslof the bobbins to slip off thebobbins, thereby varying the turns of twist per inch of yarn from the point when slippage commences until bobbin set is full or ready to be' doffed. It is very desirable that the number ofr turns per inch of yarn length be uniform throughout the r bobbin. In the Davis and Furber spinning mules the twists per inch are regulated by means of the well known twist gear and worm arranged to be shifted into and out of driving engagement therewith. The present invention is designed to provide means whereby the number of turns placed in the yarn will be equalized. Y

As `previously indicated certain mechav `nisn'i disclosed in my Patent 875,655, issued j anexternal lug 11b per end of the rod 17 is held in December 31st, 1907, is utilized, and this will be described.

The frame of the spinning mule is indicated 5. On this frame the worm driven gear 6 is mounted on mechanism not shown to have a vertical movement with its shaft 7, so as to engage and disengagel the worm 8, which is mounted in the bearings 9 on the frame 5. This gear 6 is provided with a series of radially spaced holes 6a in any one of which one of the pins 10 may be inserted. These pins are retained in their inserted holes by means of the plate 11, which is retained on the shaft 7 of the gear 6 by means of the Cotter pin 12. vTwo pins 10 arel located in adjacent holes and between these pins a lug 11a carried by or formed on the plate 11 projects.

The plate 111s formed or provided with Y which is engaged by the arm 13 of the lever 14, which is mounted to rotate on the shaft 7 being retained in place by the cotter pin 12. This lever 14 is pivotally connected to the sleeve 15 by means of the set screw 15. The sleeve 15 is mounted on thel operating rod 17, which is equipped -with a sleeve or collar 18 adjust- -able thereon by means of the set screwV 19,

and providing lar 18. Y v

The upper end of the operating rod 17 is pivotally connected with a bell crank lever 20, through the pin shaft 21,' which is adjustably secured in the slot 22 of the arm 22. The lever 2O is pivoted at 23 to the bearing 24 of the bloclz 25, which is secured in place by the usual bolt cover 26. The other arm 27 of the lever 20 is provided with a slot 27 "to which the block 28 is pivotally and adjustably connectedby means of the pin shaft 29 or set screw.

a stop for the sleeve or colplace on the shaft 21 by means of the cotter pin 21.

A horizontal shaft 22 is connected at its inner end to the block 28, and is pivotally connected at its outer end bymeans of the pin shaft 29 to the arin'SO which is secured to the horizontalV operating shaft 31 yby means of the set screw 82. the roclr shaft 58 in my Patent #875,655). The rock shaft 31 is supported upon the spool stand shaft of the spinning mule mechanism, by means of the brackets 33 and 34s,' which are positively clamped to the The up- (Referred to as spool stand shaft by the screws 35. Each bracket has an upstanding arm 36 which is provided with a longitudinal slot 36. Each arm 36 is engaged by a pendant arm 37, extending from a collar 38, which provides a bearing for the roei; shaft 31. Gne of the collars 38 is engaged by a stop collar 39 secured against slippage on the roei( shaft il by means oii the set screw 39. The collar ot the other` arm is engaged by the collar 40 which carries an arm 4-1, having a longitudinal slot e1 therein. rllhe collar Ll() is held in place by means ot the set screw 4U.

The arm 1l1 is engaged by the arm 4:2 or' the member 43, which carries the bearing block 43, through the connecting set screw Lili. The arm i2 is pivotally connected to the arm Li1 by means of the set screw 42.

A horizontal rod l5 extends through the bearing block 4:3 and to one end of this rod the roving lock slide 4-6 is pivotally connected by means of the set screw 417. This slide is provided with a slot through which the retaining screw 46 entends, and which slide is rei-erred to in my Patent 875,655 by the reference 37.

The rock shaft 31 carries a collar 48, which is secured in place by means of the set screw i8. rlhis collar is provided with an arm Li9 which is pivotally connected to the block 50 mounted on the vertical oper'- ating rod 51 by means or the set screw 50.

The lower end of the operating rod 51 is pivotaily connected to the slotted arm 52 ot the bell crank lever 53 Vby means or' the pin shaft 5st, and this bell cranl; lever is pivoted by thel screw 55 to the bearing 56 carried by the bracket 56a, which is bolted to the mule breast 57. The other arm 58 of the lever is pivotally connected with the horizontal rod 59, which carries the collar 60. This col ar is retained in selected position by means ot the set screw (i1 and is provided with a lateral lug 62 which bears against the end ot the back shoe '63, which is referred to by the reference i3 of my previous patent. The rod 59 also carries a collar (5f-l which is secured thereto by the set screw '65 and this collar engages the bracket 66, which is bolted in position on the bed plate of the mule, the rod 59 extending through a hole in the bracliet 56. A. third collar 67 is mounted on the rod 59 by means oi the set screw (i8 and a coil spring 69 is connected at one end to the lug G7 oit the collar 67 and to the bracket 6G, so as to maintain tension on the back shoe, through the rod 59, and also on the vertical rod 51 and the parts connected therewith, and previously di,.,cri`ped.

Ythe roving slide loci; engages the roving gear 70, in the manner described in my Patent gitia, so that the are of movement oi' the roving gear will be varied to prevent :i thickening ot the yarn during the final phase of the building or winding of the bobbin, by the action ot' the building shoe, which is actuated by mechanism not shown and which belongsvto the well known Davis and Furber spinning mules.

is the building shoe moves against the lug 62 and movement is thus imparted to the roving lock sli le the. vertical operating rod 17 will be shifted to impart a rotative movement to the lever 111, so that the twist gear 6 will be moved a distance corresponding to the movement imparted to the rod. 17 by the building shoe, which action will shorten the arc of movement ot the twist gear, thus equalizing the turns or twist of the yarn during the terminal stage of the building oi' the bobbins, while at the same time the quantity of the yarn is being controlled by the action of the roving lock slide on the roving gear.

rThe twist equalizer may be used without the yarn evener, and the two may be used, as indicated, together or jointly.

The plate 11 may be formed with an integral arm 11c and the vertical rod 17 provided with a collar 17L adapted to abut against this arm to swing the lever 11c and its plate 11, to vary the relation of the twist gear G, as in the previously described construction, the inner tace of the plate being 'formed with an Vintegral lug to engage the pins provided on the gear G.

Having described my invention I claim 2- 1. The combination with a spinning mule head having a twist controlling gear and equipped with means -tor shitting said gear Ainto and out oiE driving engagement with driving mechanism carried by the mule head, otl means t'or regulating the arc of movement of the gear consisting of a member disposed against the side ot the gear and provided with a projection adapted to be connected 'tor' driving action with the gear and means arranged to be operated by the building shoe of the mule head for shifting said member.

2. The combination with a spinning mule head having a twist regulating gear, of a member mounted against the side ot the gear, means for varying the relation ot the member to the gear, and means 'for operating the member to vary the arc or' movement of the gear during the period ot engagement ot the gear with its driving mechanism.

3. The combination with a spinning mule having a twist regulating gear, said gear having a series ot radially spaced holes, a plate disposed against the side ot the gear and provided with a lug projecting toward the side of the gear, pins insertable in the gear holes, means for driving the gear, means ior moving the gear into and out of driving engagement with said drivin@r means, a building shoe and means operated by the building shoe for causing the plate to s lift the gear to vary its are of movement.

4L. The combination with a spinning mule ot' a twist equalizer, a building shoe, and means controlled by the building shoe for operating the equalizer to maintain the same proportional number of turns per inch in the yarn during the final period of the building of the bobbins as produced during the previous period.

5. The combination with a spinning mule having a twist regulating gear, a building shoe, and means controlled by the building shoe for varying the are of movement of the twist gear.

6. The combination with a spinning mule having a twist gear and a roving gear, a building shoe, and means controlled by the building shoe for varying the arc of movementof the twist gear and the roving gear.

7. The combination with a spinning mule having a twist gear, said gear having a series of circumferentially spaced openings, a plate disposed against said gear and having a lug facing said gear, pins adjustable in the openings and engageable by the lug, a build` ing` shoe, and means Controlled by the building shoe for shifting the plate to va-ry the arc of movement of the twist gear.

Signed by me at Dalton, Mass.

ROBERT J. HARRINGTON. 

